US Army Organ Donor Registry: The Pentagon's Recycling Program

“In other cases, the cerebral matter is so necrotic, or so much is missing, that the patient may have a better outlook for survival by having some portion of their brain restored via transplantation. The only way to accomplish this is by reaping the "leftover" cerebrum of a dead man in the form of stems cells, cerebrospinal fluid, vascular structures, or other.”